package com.tmsps.common.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
 * 获取spring容器中的bean
 * @author geek
 */
public class ApplicationContextUtil implements ApplicationContextAware {
    private static ApplicationContext applicationContext;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if(ApplicationContextUtil.applicationContext == null) {
            ApplicationContextUtil.applicationContext = applicationContext;
        }
    }

    /**获取applicationContext
     * return
     */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    /**通过name获取 Bean.
     * @param name
     * return
     */
    public static Object getBean(String name){
        return getApplicationContext().getBean(name);
    }

    /**通过class获取Bean.
     * @param clazz
     * @param <T>
     * return
     */
    public static <T> T getBean(Class<T> clazz){
        return getApplicationContext().getBean(clazz);
    }

    /**通过name,以及Clazz返回指定的Bean
     * @param name
     * @param clazz
     * @param <T>
     * return
     */
    public static <T> T getBean(String name,Class<T> clazz){
        return getApplicationContext().getBean(name, clazz);
    }
}